After the adjustment of the caching settings, it has been found that a large part of the load time of the web site is created by the file ‘/wp-admin/admin-ajax.php, to the action? Action = uplift_custom_css.
In the example I tested was 1.72 seconds from 2.40 seconds total load time generated by the admin ajax.php file. Incidentally, the total charging time for different tests at our variable, between 2.40 seconds and 2.90 seconds. However, the rough charging time of 1.7 seconds for the admin ajax.php remained constant.
Below you will find for your web builder, the HTTP headers of the request which provides for the delay. The load time was 1.72 seconds for the request, probably because the file is more than once called on every page load
=== Headers ===
Request
URL:http://fs4trading.com/wp-admin/admin-ajax.php?action=uplift_custom_css
Request Method:GET
Status Code:200 OK
Remote Address:91.184.27.212:80
Response Headers
Cache-Control:no-cache, must-revalidate, max-age=0 Connection:Keep-Alive Content-Encoding:gzip
Content-Length:9629
Content-Type:text/css; charset: UTF-8;charset=UTF-8 Date:Wed, 22 Jun 2016 09:37:13 GMT Expires:Wed, 11 Jan 1984 05:00:00 GMT Keep-Alive:timeout=5, max=91 Pragma:no-cache Server:Apache Vary:Accept-Encoding X-Content-Type-Options:nosniff X-Frame-Options:SAMEORIGIN
X-Powered-By:PHP/5.6.22
X-Robots-Tag:noindex
X-SERVER:1915
Request Headers
Accept:text/css,*/*;q=0.1
Accept-Encoding:gzip, deflate, sdch
Accept-Language:en-GB,en;q=0.8,en-US;q=0.6,nl;q=0.4
Cache-Control:no-cache
Connection:keep-alive
Host:fs4trading.com
Pragma:no-cache
Referer:http://fs4trading.com/
User-Agent:Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like
Gecko) Ubuntu Chromium/50.0.2661.102 Chrome/50.0.2661.102 Safari/537.36 Query String Parameters action:uplift_custom_css
===
From my HOSTING:
Research has shown that the application of “uplift” in it can be caused by the plugin ‘Uplift demos, “but it is more likely that this is built into the” Swift framework’ used. Personally, I would recommend contacting the publishers of Swift Framework to see if there are known problems that can cause the extension of the charging time. Swift framework seems a paid theme, normally you can also ask for support from the issuer thereof.
We hope you help enough on the road with the above information to have a definitive solution to the performance problems of your website.